• 2022-07-25
    一质量为0.01kg的物体作简谐振动,其振幅为0.24m,周期为4.0s,当t=0时位移为0.24m,则此时质点的加速度为[ ]
    A: [img=78x27]18037478791bbbb.png[/img]
    B: [img=64x27]180374788187aaa.png[/img]
    C: [img=64x27]1803747889c3578.png[/img]
    D: [img=78x27]180374789306933.png[/img]